Printing machine



Dec. 25, 1928. 1,696,281

s. O'HARA 4 PRINTING MACHINE Filed July 8, 1927 Patented Dec. 25, 1928.

UNITED STATES I M 1,696,281 PATENT, OFFICE.

BIKIDMOBE OHABA, OF WAL'IHAM; MASSACHUSETTS, ASSIGNOF, T0 OHARA WALTHAM COMPANY, OF WALTHAM, MASSACHUSETTS, A CORPORATION OF MASS AQHUSETTS PBIN TING MACHINE,

Application filed July 8,

is adapted to transfer to the work the design so received from the die.

The invention will be understood from the followin description when taken in connection with .the accompanying drawings and the novel features thereof will be pointed out and clearly defined in the claims at the close of this specification.

In the drawin c Fig. 1 is a ragmentary side elevation partly in diagram of a machine embodying the invention, showing the printing member in alinement with the die and ready to be moved into engagement with the die to receive the impression. v Fig. 2 is a similar view showing the prlnting member moved into engagement w1th the die.

Fig. 3 is a similar view showing the printing member after it has been moved downward out of engagement with the die and rotated through 180 during which movement it is reversed and brought into alinement with the work support.

Fig. 4 is a similar view showing the printing member after it has been moved downward from the osition shown in Fig. 3 into engagement wit the work.

Fig. 5 is an enlarged detail sectional view of the locking means for the shaft 25.

Fig. 6 is an enlarged sectional view on line 6-6 of Fig. 1.

Referring to the drawings, there is shown at 10 a portion of the frame to hold the workin parts." Slidablymounted in guideways 0 the frame 10 is a die carrier 11 on the underside of which is mounted a die 12 on which is engraved or otherwise produced the design of whatever character is intended to be printed upon the work. Said carrier 11 is slidable horizontally in its guideways to bring the die into operative position as shown in Fig. 1 and also to move it backward from said position at the proper time 1927. Serial N0. 204,273.

to bring the die into engagement with an inking roll 13. Any suitable mechanism may be employed for giving reciprocating movement to the die carrier. As shown in the drawings the said carrier has a portion formed with'teeth 14 on its under side engaged by a pinion '15 which may be operated by any suitable means to move the die carrier forward and back. Preferablya wiper 16 is provided to Wipe off the surplus ink from the die.

A work support 17 is adapted to support 7 an article to be printed asshown at w in position to be operated upon by the printing member. Said work support 17 is mounted on an upwardly extending portion 19 of an arm or bracket 20 projecting from the frame of the machine and so located that the work support will be somewhat below and offset from the die 12 when the die is in its operative position as shown in Fig. 1.

A printingmember 21 is mounted upon a holder 22. Said printing member" is composed of gelatin or other suitable material of such character that it is adapted to take off an impression of the design from the die 12 when the printing member is brought into contact with the die and which is adapted to transfer said impression to the work when in turn the printing member is pressed into contact with the work.

Said holder 22 for the printing member is mountedupon a horizontal shaft 2 journalled in hearings in a bracket 24. Said bracket 24 is mounted upon a vertical shaft 25 which passes through an aperture in a bearing portion 3 of said bracket and also extends through and below the bracket 20. Said shaft 25 is both rotatable on its axis and axially slidable in bearings in said bracket 20. The bracket 24 is made fast to said shaft 25 by a set screw 4 so that when said shaft .25 rotates said bracket 24 will also rotate on the same axis and carry with it the holder 22 and the printing member 21.

An arm 28'rises from the bracket 20 and has at its upper end a bearing 5 through which extends a vertical stud 6 which is stationary. Said stud 6 extends down into a cored out socket in the shaft 25. Mounted on said stud 6 is a bevelled gear 31 which is keyed thereto by a feather 32 which permits a vertically sliding movement of said gear 31 on said stud but which prevents rotary movement of said gear. A bevelled gear 33 mounted on the shaft 2 meshes with the bevelled gear 31.

Means are provided for rotating at will said shaft 25. The means shown in the drawing consists of a hand wheel 34. lVhen said shaft 25 is rotated it will cause the bracket 24 to rotate on the axis of said shaft and swing the holder 22 for the printing member around so that said printing member may thus be moved from the position shown-in Figs. 1 and 2 where it is in aline' ment with the die into the position shown in Figs. 3 and 4 where it is in alinement with the work support. A stop pin 7 depending from the bracket 20 is adapted to be engaged by a stop pin 8 projecting from the side of the shaft 25 to limit the rotary movement of said shaft in one direction so it will not pass beyond the position of alinement with the die and a stop pin 9 also depending from the bracket 20 is adapted to be engaged by the stop pin 8 to limit the rotary movement of the shaft in the opposite direction to prevent its being moved beyond the proper position for alinement with the work support. A spring seated pin 38 is adapted to engage with one of the slots 0, 7) in the periphery of the shaft 25 when the printingmember is brought into alinement with the die or with the work holder respectively to prevent the reverse rotation of the shaft 25 to carry the printing member out of alinement with the die 12 or the work support18 as the case may be during the vertical movement of the printing menu ber. Said slots are elongated to allow for vertical movement of the bracket 21.

A lever 40 has two branch arms 41, 4:1 pivoted at 42 to a hanger 43 depending from the bracket 20. Each of said arms 41 is formed with an elongated slot 11 which is engaged by a pin 15 projecting from the side of the shaft 25. By raising or depressing the handle at the end of the lever -10 said shaft 25 may be raised or lowered as the case may be. iihen said shaft 25 is raised it will move the printing member upward and when it is depressed it will carry the printing member downward. The lever 41 passes through a verticalguide slot -16 in a bracket 47 depending from the bracket 20.' A spring seated pin 18 located in a slot in the bracket 17 is adapted to engage with a notch 19 in the lever 10 when said lever is in an intermediate position as shown in Fig. 1 to hold the said shaft 25 in an intermediate position where the print ing member 21 willbe spaced away from the die 12 when desired during the operation so as to prevent interference with the die 12 in its movement into or out of the operative position shown in Fig. 1. It also is adapted to hold the printing member in intermediate position when the printing member is being swung around to alinc it with the work support as shown in Fig. 3.

In operation assuming the parts are in the position shown in Fig. 1 if the handle -10 of the lever is moved upwards it will carry the printing member 21 up against the die 12 into the position shown in Fig. 2 whereby it will receive from the die the inked form of the design. Then the said lever will be again depressed to bring the printing member into the position shown in F i". l. The wheel 3% will then be operated to rotate the shaft 25tlirough 180, and by reason of the bevelled gear 33 engaging with the fixed bevelled gear 31, said holder 22 for the printing member will be given a half rotation on said shaft thereby inverting the printing member 21 so that when said shaft 25 has made its half rotation the printing member 21 will face downward directly in alinement with the work support as shown in F The printing member will be stopped at the end of the half rotation by the stop mechanism already described. Now by depressing the handle at) of the operating lever the printing member will be brought into pressing engagement with the work mounted on the work support 17 as shown in Fig. 4. The operating lever 40 should then be tipped up again far enough to lock the lever in the partially elevated position by means of the spring pin already described, then the hand, wheel 34; should be operated to bring the printing member back again into alinement with the die as shown in Fig. 1. In the meantime the die carrier should have been actuated to move the die to the right as shown in the drawings to be engaged by the inking roller 13 and then moved back again into operative position shown in Fig. 1 ready to be engaged by the printing member on the further upward movement of the printing member so that Hit) the design will again be transferred from the die to the printing member. In the meantime also the printed article should be removed from the work holder and a new piece of work positioned thereon.

\Vhat I claim is:

1. In a printing machine, a die and a. work support at different elevations and out of alinement with each other, a printing member mounted on a support which is rotatable in a horizontal plane intermediate the die and the work support, said support for the printing member being adapted to be rotated to, brin the printing member into alinement witi either the die or with the work, means whereby when the printing member is shifted from its position in alinement with the die to the position in alinement with the work, the said printing member will be inverted to bring the printing face toward the work and when it is moved from alinement with the work to alinement with the die, the printing face will be reversed in position so as to face the die.

to hold the printing member in alinement with the work support, means for swinging said arm in a horizontal plane to bring the printing member into alinement with either the die or the work on the work support, means for maintaining the face-of said printing member toward the die when in alinement therewith and means whereby said printing member is given a partial rotation on its horizontal axis at the same time that its support is rotated whereby the said printing member will be caused to face the work and means whereby said printing member may be moved into engagement with either the die or the work when it is in alinement therewith.

3. In a printing machine, a die and a Work support at different elevations and offset from each other, a printing member intermediate the die and the work support, a support for the printing member, means whereby the printing member may be moved into alinement with either the die or the work support, means whereby when the printing member is in alinement with either of said two members it may be moved into engagement therewith, and means whereby the support for the printing member may be locked in an intermediate position out of engagement with both the die and the work support.

4. In a'printing machine, a die and a work support out of axial alinement with each other, a printing member mounted on a-support which is rotatable to bring the printing member into alinement with either the die or with the work, means whereby when the printing member is shifted fronrits position in alinement with the die to the position in alinement with the work, the said printing member will be inverted to bring the printing face toward the work and when it is moved from alinement with the work to alinement with the die, the printing memher will be reversed in position so as to face the die. I I

5. In a printing machine, a die and a work support out of axial alinement with each other, a printing member mounted on an arm which is rotatably mounted on a vertical axis, said arm being adapted when in i one position to hold the printing member in alinement with the die and when in another position being adapted tovhold'the printing member in alinement with the work support, means for swinging said arm to bring the printing member into alinement with either the die or the work on the work s'u port as desired, means for maintaining t e face ofsaid printing member toward the die when in alinement therewith, and means whereby said printing member is inverted when its support is rotated and thereby cause the printing member to face the work.

6. In a printing machine,ta die and a work support offset from each other, one facing upwards and the other facing downwards, a printing member intermediate the die and the work support, a support for the printing member, means whereby the printing member may be moved into alinement with either the die or the work support at will, means whereby when the printing member is moved from one of said positions to the other it will be inverted so that when in alinement with the die it will face the die and when in alinement with the worksuport it will face the work, and means wherey when the printing member is in alinement with either the work support or the die it may be moved into engagement therewith. p r r In testimony whereof I aflix my signature.

, f SKIDMORE OHARA. 

